Harmonic reduction in inverters fed from a standalone PV system is currently becoming important in medium power applications. This paper focuses on the design and analysis of various passive filters for power quality improvement in standalone PV systems. Different passive filters are designed and analysed to reduce the total harmonic distortion of the proposed system. The passive filters include LC, LCL and LLCC filter topologies. A comparison study of the total harmonic distortion reduction with the above filters is done. Further, the paper attempts to show that the use of LLCC filter with a standalone PV system can highly improve the power quality of the system. Results are verified using simulations in MATLAB-SIMULINK environment. © 2013 IEEE.

Sreedevi V T

Electrical

School of Electrical Engineering

Chennai Campus

Meenakshi J

Balakrishnan R.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

2013 Nirma University International Conference on Engineering (NUiCONE)

Standards applied to electrical energy systems require pure sinusoidal waveforms, with lesser harmonic contents. This work aims to design and perform a comparative analysis of LC and LCL type passive filters for harmonic reduction in standalone PV systems. The work provides procedural steps to choose the filter component values that include the reactive elements and damping resistance. The design steps for the filters consider harmonics emerging due to inverter switching. Frequency response characteristics are obtained to assess the filter performance. A 110V/250 W inverter is implemented to examine the designed filter performance on an experimental platform with the modulation algorithm implemented using a SPARTAN 3E-XCS250E FPGA processor. Simulation and experimental results are incorporated to assess the LC and LCL filter designs with regard to harmonic distortion reduction and output waveform quality. © 2017 IEEE.

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Analysis and design of passive filters for power quality improvement in standalone PV systems

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